diff options
Diffstat (limited to 'fs/reiserfs/stree.c')
| -rw-r--r-- | fs/reiserfs/stree.c | 812 |
1 files changed, 469 insertions, 343 deletions
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index 40b3e77c8ff3..aa86757e48f8 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -8,46 +8,6 @@ * Pereslavl-Zalessky Russia */ -/* - * This file contains functions dealing with S+tree - * - * B_IS_IN_TREE - * copy_item_head - * comp_short_keys - * comp_keys - * comp_short_le_keys - * le_key2cpu_key - * comp_le_keys - * bin_search - * get_lkey - * get_rkey - * key_in_buffer - * decrement_bcount - * reiserfs_check_path - * pathrelse_and_restore - * pathrelse - * search_by_key_reada - * search_by_key - * search_for_position_by_key - * comp_items - * prepare_for_direct_item - * prepare_for_direntry_item - * prepare_for_delete_or_cut - * calc_deleted_bytes_number - * init_tb_struct - * padd_item - * reiserfs_delete_item - * reiserfs_delete_solid_item - * reiserfs_delete_object - * maybe_indirect_to_direct - * indirect_to_direct_roll_back - * reiserfs_cut_from_item - * truncate_directory - * reiserfs_do_truncate - * reiserfs_paste_into_item - * reiserfs_insert_item - */ - #include <linux/time.h> #include <linux/string.h> #include <linux/pagemap.h> @@ -65,21 +25,21 @@ inline int B_IS_IN_TREE(const struct buffer_head *bh) return (B_LEVEL(bh) != FREE_LEVEL); } -// -// to gets item head in le form -// +/* to get item head in le form */ inline void copy_item_head(struct item_head *to, const struct item_head *from) { memcpy(to, from, IH_SIZE); } -/* k1 is pointer to on-disk structure which is stored in little-endian - form. k2 is pointer to cpu variable. For key of items of the same - object this returns 0. - Returns: -1 if key1 < key2 - 0 if key1 == key2 - 1 if key1 > key2 */ +/* + * k1 is pointer to on-disk structure which is stored in little-endian + * form. k2 is pointer to cpu variable. For key of items of the same + * object this returns 0. + * Returns: -1 if key1 < key2 + * 0 if key1 == key2 + * 1 if key1 > key2 + */ inline int comp_short_keys(const struct reiserfs_key *le_key, const struct cpu_key *cpu_key) { @@ -97,11 +57,13 @@ inline int comp_short_keys(const struct reiserfs_key *le_key, return 0; } -/* k1 is pointer to on-disk structure which is stored in little-endian - form. k2 is pointer to cpu variable. - Compare keys using all 4 key fields. - Returns: -1 if key1 < key2 0 - if key1 = key2 1 if key1 > key2 */ +/* + * k1 is pointer to on-disk structure which is stored in little-endian + * form. k2 is pointer to cpu variable. + * Compare keys using all 4 key fields. + * Returns: -1 if key1 < key2 0 + * if key1 = key2 1 if key1 > key2 + */ static inline int comp_keys(const struct reiserfs_key *le_key, const struct cpu_key *cpu_key) { @@ -155,15 +117,17 @@ inline void le_key2cpu_key(struct cpu_key *to, const struct reiserfs_key *from) to->on_disk_key.k_dir_id = le32_to_cpu(from->k_dir_id); to->on_disk_key.k_objectid = le32_to_cpu(from->k_objectid); - // find out version of the key + /* find out version of the key */ version = le_key_version(from); to->version = version; to->on_disk_key.k_offset = le_key_k_offset(version, from); to->on_disk_key.k_type = le_key_k_type(version, from); } -// this does not say which one is bigger, it only returns 1 if keys -// are not equal, 0 otherwise +/* + * this does not say which one is bigger, it only returns 1 if keys + * are not equal, 0 otherwise + */ inline int comp_le_keys(const struct reiserfs_key *k1, const struct reiserfs_key *k2) { @@ -177,24 +141,27 @@ inline int comp_le_keys(const struct reiserfs_key *k1, * *pos = number of the searched element if found, else the * * number of the first element that is larger than key. * **************************************************************************/ -/* For those not familiar with binary search: lbound is the leftmost item that it - could be, rbound the rightmost item that it could be. We examine the item - halfway between lbound and rbound, and that tells us either that we can increase - lbound, or decrease rbound, or that we have found it, or if lbound <= rbound that - there are no possible items, and we have not found it. With each examination we - cut the number of possible items it could be by one more than half rounded down, - or we find it. */ +/* + * For those not familiar with binary search: lbound is the leftmost item + * that it could be, rbound the rightmost item that it could be. We examine + * the item halfway between lbound and rbound, and that tells us either + * that we can increase lbound, or decrease rbound, or that we have found it, + * or if lbound <= rbound that there are no possible items, and we have not + * found it. With each examination we cut the number of possible items it + * could be by one more than half rounded down, or we find it. + */ static inline int bin_search(const void *key, /* Key to search for. */ const void *base, /* First item in the array. */ int num, /* Number of items in the array. */ - int width, /* Item size in the array. - searched. Lest the reader be - confused, note that this is crafted - as a general function, and when it - is applied specifically to the array - of item headers in a node, width - is actually the item header size not - the item size. */ + /* + * Item size in the array. searched. Lest the + * reader be confused, note that this is crafted + * as a general function, and when it is applied + * specifically to the array of item headers in a + * node, width is actually the item header size + * not the item size. + */ + int width, int *pos /* Number of the searched for element. */ ) { @@ -216,8 +183,10 @@ static inline int bin_search(const void *key, /* Key to search for. */ return ITEM_FOUND; /* Key found in the array. */ } - /* bin_search did not find given key, it returns position of key, - that is minimal and greater than the given one. */ + /* + * bin_search did not find given key, it returns position of key, + * that is minimal and greater than the given one. + */ *pos = lbound; return ITEM_NOT_FOUND; } @@ -234,10 +203,14 @@ static const struct reiserfs_key MAX_KEY = { __constant_cpu_to_le32(0xffffffff)},} }; -/* Get delimiting key of the buffer by looking for it in the buffers in the path, starting from the bottom - of the path, and going upwards. We must check the path's validity at each step. If the key is not in - the path, there is no delimiting key in the tree (buffer is first or last buffer in tree), and in this - case we return a special key, either MIN_KEY or MAX_KEY. */ +/* + * Get delimiting key of the buffer by looking for it in the buffers in the + * path, starting from the bottom of the path, and going upwards. We must + * check the path's validity at each step. If the key is not in the path, + * there is no delimiting key in the tree (buffer is first or last buffer + * in tree), and in this case we return a special key, either MIN_KEY or + * MAX_KEY. + */ static inline const struct reiserfs_key *get_lkey(const struct treepath *chk_path, const struct super_block *sb) { @@ -270,7 +243,10 @@ static inline const struct reiserfs_key *get_lkey(const struct treepath *chk_pat PATH_OFFSET_PBUFFER(chk_path, path_offset + 1)->b_blocknr) return &MAX_KEY; - /* Return delimiting key if position in the parent is not equal to zero. */ + /* + * Return delimiting key if position in the parent + * is not equal to zero. + */ if (position) return internal_key(parent, position - 1); } @@ -308,15 +284,23 @@ inline const struct reiserfs_key *get_rkey(const struct treepath *chk_path, path_offset)) > B_NR_ITEMS(parent)) return &MIN_KEY; - /* Check whether parent at the path really points to the child. */ + /* + * Check whether parent at the path really points + * to the child. + */ if (B_N_CHILD_NUM(parent, position) != PATH_OFFSET_PBUFFER(chk_path, path_offset + 1)->b_blocknr) return &MIN_KEY; - /* Return delimiting key if position in the parent is not the last one. */ + + /* + * Return delimiting key if position in the parent + * is not the last one. + */ if (position != B_NR_ITEMS(parent)) return internal_key(parent, position); } + /* Return MAX_KEY if we are in the root of the buffer tree. */ if (PATH_OFFSET_PBUFFER(chk_path, FIRST_PATH_ELEMENT_OFFSET)-> b_blocknr == SB_ROOT_BLOCK(sb)) @@ -324,13 +308,20 @@ inline const struct reiserfs_key *get_rkey(const struct treepath *chk_path, return &MIN_KEY; } -/* Check whether a key is contained in the tree rooted from a buffer at a path. */ -/* This works by looking at the left and right delimiting keys for the buffer in the last path_element in - the path. These delimiting keys are stored at least one level above that buffer in the tree. If the - buffer is the first or last node in the tree order then one of the delimiting keys may be absent, and in - this case get_lkey and get_rkey return a special key which is MIN_KEY or MAX_KEY. */ -static inline int key_in_buffer(struct treepath *chk_path, /* Path which should be checked. */ - const struct cpu_key *key, /* Key which should be checked. */ +/* + * Check whether a key is contained in the tree rooted from a buffer at a path. + * This works by looking at the left and right delimiting keys for the buffer + * in the last path_element in the path. These delimiting keys are stored + * at least one level above that buffer in the tree. If the buffer is the + * first or last node in the tree order then one of the delimiting keys may + * be absent, and in this case get_lkey and get_rkey return a special key + * which is MIN_KEY or MAX_KEY. + */ +static inline int key_in_buffer( + /* Path which should be checked. */ + struct treepath *chk_path, + /* Key which should be checked. */ + const struct cpu_key *key, struct super_block *sb ) { @@ -359,9 +350,11 @@ int reiserfs_check_path(struct treepath *p) return 0; } -/* Drop the reference to each buffer in a path and restore +/* + * Drop the reference to each buffer in a path and restore * dirty bits clean when preparing the buffer for the log. - * This version should only be called from fix_nodes() */ + * This version should only be called from fix_nodes() + */ void pathrelse_and_restore(struct super_block *sb, struct treepath *search_path) { @@ -418,14 +411,17 @@ static int is_leaf(char *buf, int blocksize, struct buffer_head *bh) } ih = (struct item_head *)(buf + BLKH_SIZE) + nr - 1; used_space = BLKH_SIZE + IH_SIZE * nr + (blocksize - ih_location(ih)); + + /* free space does not match to calculated amount of use space */ if (used_space != blocksize - blkh_free_space(blkh)) { - /* free space does not match to calculated amount of use space */ reiserfs_warning(NULL, "reiserfs-5082", "free space seems wrong: %z", bh); return 0; } - // FIXME: it is_leaf will hit performance too much - we may have - // return 1 here + /* + * FIXME: it is_leaf will hit performance too much - we may have + * return 1 here + */ /* check tables of item heads */ ih = (struct item_head *)(buf + BLKH_SIZE); @@ -460,7 +456,7 @@ static int is_leaf(char *buf, int blocksize, struct buffer_head *bh) prev_location = ih_location(ih); } - // one may imagine much more checks + /* one may imagine many more checks */ return 1; } @@ -481,8 +477,8 @@ static int is_internal(char *buf, int blocksize, struct buffer_head *bh) } nr = blkh_nr_item(blkh); + /* for internal which is not root we might check min number of keys */ if (nr > (blocksize - BLKH_SIZE - DC_SIZE) / (KEY_SIZE + DC_SIZE)) { - /* for internal which is not root we might check min number of keys */ reiserfs_warning(NULL, "reiserfs-5088", "number of key seems wrong: %z", bh); return 0; @@ -494,12 +490,15 @@ static int is_internal(char *buf, int blocksize, struct buffer_head *bh) "free space seems wrong: %z", bh); return 0; } - // one may imagine much more checks + + /* one may imagine many more checks */ return 1; } -// make sure that bh contains formatted node of reiserfs tree of -// 'level'-th level +/* + * make sure that bh contains formatted node of reiserfs tree of + * 'level'-th level + */ static int is_tree_node(struct buffer_head *bh, int level) { if (B_LEVEL(bh) != level) { @@ -546,7 +545,8 @@ static int search_by_key_reada(struct super_block *s, for (j = 0; j < i; j++) { /* * note, this needs attention if we are getting rid of the BKL - * you have to make sure the prepared bit isn't set on this buffer + * you have to make sure the prepared bit isn't set on this + * buffer */ if (!buffer_uptodate(bh[j])) { if (depth == -1) @@ -558,39 +558,34 @@ static int search_by_key_reada(struct super_block *s, return depth; } -/************************************************************************** - * Algorithm SearchByKey * - * look for item in the Disk S+Tree by its key * - * Input: sb - super block * - * key - pointer to the key to search * - * Output: ITEM_FOUND, ITEM_NOT_FOUND or IO_ERROR * - * search_path - path from the root to the needed leaf * - **************************************************************************/ - -/* This function fills up the path from the root to the leaf as it - descends the tree looking for the key. It uses reiserfs_bread to - try to find buffers in the cache given their block number. If it - does not find them in the cache it reads them from disk. For each - node search_by_key finds using reiserfs_bread it then uses - bin_search to look through that node. bin_search will find the - position of the block_number of the next node if it is looking - through an internal node. If it is looking through a leaf node - bin_search will find the position of the item which has key either - equal to given key, or which is the maximal key less than the given - key. search_by_key returns a path that must be checked for the - correctness of the top of the path but need not be checked for the - correctness of the bottom of the path */ -/* The function is NOT SCHEDULE-SAFE! */ -int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to search. */ - struct treepath *search_path,/* This structure was - allocated and initialized - by the calling - function. It is filled up - by this function. */ - int stop_level /* How far down the tree to search. To - stop at leaf level - set to - DISK_LEAF_NODE_LEVEL */ - ) +/* + * This function fills up the path from the root to the leaf as it + * descends the tree looking for the key. It uses reiserfs_bread to + * try to find buffers in the cache given their block number. If it + * does not find them in the cache it reads them from disk. For each + * node search_by_key finds using reiserfs_bread it then uses + * bin_search to look through that node. bin_search will find the + * position of the block_number of the next node if it is looking + * through an internal node. If it is looking through a leaf node + * bin_search will find the position of the item which has key either + * equal to given key, or which is the maximal key less than the given + * key. search_by_key returns a path that must be checked for the + * correctness of the top of the path but need not be checked for the + * correctness of the bottom of the path + */ +/* + * search_by_key - search for key (and item) in stree + * @sb: superblock + * @key: pointer to key to search for + * @search_path: Allocated and initialized struct treepath; Returned filled + * on success. + * @stop_level: How far down the tree to search, Use DISK_LEAF_NODE_LEVEL to + * stop at leaf level. + * + * The function is NOT SCHEDULE-SAFE! + */ +int search_by_key(struct super_block *sb, const struct cpu_key *key, + struct treepath *search_path, int stop_level) { b_blocknr_t block_number; int expected_level; @@ -609,17 +604,22 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s PROC_INFO_INC(sb, search_by_key); - /* As we add each node to a path we increase its count. This means that - we must be careful to release all nodes in a path before we either - discard the path struct or re-use the path struct, as we do here. */ + /* + * As we add each node to a path we increase its count. This means + * that we must be careful to release all nodes in a path before we + * either discard the path struct or re-use the path struct, as we + * do here. + */ pathrelse(search_path); right_neighbor_of_leaf_node = 0; - /* With each iteration of this loop we search through the items in the - current node, and calculate the next current node(next path element) - for the next iteration of this loop.. */ + /* + * With each iteration of this loop we search through the items in the + * current node, and calculate the next current node(next path element) + * for the next iteration of this loop.. + */ block_number = SB_ROOT_BLOCK(sb); expected_level = -1; while (1) { @@ -639,8 +639,10 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s ++search_path->path_length); fs_gen = get_generation(sb); - /* Read the next tree node, and set the last element in the path to - have a pointer to it. */ + /* + * Read the next tree node, and set the last element + * in the path to have a pointer to it. + */ if ((bh = last_element->pe_buffer = sb_getblk(sb, block_number))) { @@ -676,9 +678,12 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s expected_level = SB_TREE_HEIGHT(sb); expected_level--; - /* It is possible that schedule occurred. We must check whether the key - to search is still in the tree rooted from the current buffer. If - not then repeat search from the root. */ + /* + * It is possible that schedule occurred. We must check + * whether the key to search is still in the tree rooted + * from the current buffer. If not then repeat search + * from the root. + */ if (fs_changed(fs_gen, sb) && (!B_IS_IN_TREE(bh) || B_LEVEL(bh) != expected_level || @@ -689,8 +694,10 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s sbk_restarted[expected_level - 1]); pathrelse(search_path); - /* Get the root block number so that we can repeat the search - starting from the root. */ + /* + * Get the root block number so that we can + * repeat the search starting from the root. + */ block_number = SB_ROOT_BLOCK(sb); expected_level = -1; right_neighbor_of_leaf_node = 0; @@ -699,9 +706,11 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s continue; } - /* only check that the key is in the buffer if key is not - equal to the MAX_KEY. Latter case is only possible in - "finish_unfinished()" processing during mount. */ + /* + * only check that the key is in the buffer if key is not + * equal to the MAX_KEY. Latter case is only possible in + * "finish_unfinished()" processing during mount. + */ RFALSE(comp_keys(&MAX_KEY, key) && !key_in_buffer(search_path, key, sb), "PAP-5130: key is not in the buffer"); @@ -713,8 +722,10 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s } #endif - // make sure, that the node contents look like a node of - // certain level + /* + * make sure, that the node contents look like a node of + * certain level + */ if (!is_tree_node(bh, expected_level)) { reiserfs_error(sb, "vs-5150", "invalid format found in block %ld. " @@ -743,21 +754,31 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s } /* we are not in the stop level */ + /* + * item has been found, so we choose the pointer which + * is to the right of the found one + */ if (retval == ITEM_FOUND) - /* item has been found, so we choose the pointer which is to the right of the found one */ last_element->pe_position++; - /* if item was not found we choose the position which is to - the left of the found item. This requires no code, - bin_search did it already. */ + /* + * if item was not found we choose the position which is to + * the left of the found item. This requires no code, + * bin_search did it already. + */ - /* So we have chosen a position in the current node which is - an internal node. Now we calculate child block number by - position in the node. */ + /* + * So we have chosen a position in the current node which is + * an internal node. Now we calculate child block number by + * position in the node. + */ block_number = B_N_CHILD_NUM(bh, last_element->pe_position); - /* if we are going to read leaf nodes, try for read ahead as well */ + /* + * if we are going to read leaf nodes, try for read + * ahead as well + */ if ((search_path->reada & PATH_READA) && node_level == DISK_LEAF_NODE_LEVEL + 1) { int pos = last_element->pe_position; @@ -789,26 +810,28 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to s } } -/* Form the path to an item and position in this item which contains - file byte defined by key. If there is no such item - corresponding to the key, we point the path to the item with - maximal key less than key, and *pos_in_item is set to one - past the last entry/byte in the item. If searching for entry in a - directory item, and it is not found, *pos_in_item is set to one - entry more than the entry with maximal key which is less than the - sought key. - - Note that if there is no entry in this same node which is one more, - then we point to an imaginary entry. for direct items, the - position is in units of bytes, for indirect items the position is - in units of blocknr entries, for directory items the position is in - units of directory entries. */ - +/* + * Form the path to an item and position in this item which contains + * file byte defined by key. If there is no such item + * corresponding to the key, we point the path to the item with + * maximal key less than key, and *pos_in_item is set to one + * past the last entry/byte in the item. If searching for entry in a + * directory item, and it is not found, *pos_in_item is set to one + * entry more than the entry with maximal key which is less than the + * sought key. + * + * Note that if there is no entry in this same node which is one more, + * then we point to an imaginary entry. for direct items, the + * position is in units of bytes, for indirect items the position is + * in units of blocknr entries, for directory items the position is in + * units of directory entries. + */ /* The function is NOT SCHEDULE-SAFE! */ -int search_for_position_by_key(struct super_block *sb, /* Pointer to the super block. */ - const struct cpu_key *p_cpu_key, /* Key to search (cpu variable) */ - struct treepath *search_path /* Filled up by this function. */ - ) +int search_for_position_by_key(struct super_block *sb, + /* Key to search (cpu variable) */ + const struct cpu_key *p_cpu_key, + /* Filled up by this function. */ + struct treepath *search_path) { struct item_head *p_le_ih; /* pointer to on-disk structure */ int blk_size; @@ -851,7 +874,8 @@ int search_for_position_by_key(struct super_block *sb, /* Pointer to the super b if (comp_short_keys(&(p_le_ih->ih_key), p_cpu_key)) { return FILE_NOT_FOUND; } - // FIXME: quite ugly this far + + /* FIXME: quite ugly this far */ item_offset = le_ih_k_offset(p_le_ih); offset = cpu_key_k_offset(p_cpu_key); @@ -866,8 +890,10 @@ int search_for_position_by_key(struct super_block *sb, /* Pointer to the super b return POSITION_FOUND; } - /* Needed byte is not contained in the item pointed to by the - path. Set pos_in_item out of the item. */ + /* + * Needed byte is not contained in the item pointed to by the + * path. Set pos_in_item out of the item. + */ if (is_indirect_le_ih(p_le_ih)) pos_in_item(search_path) = ih_item_len(p_le_ih) / UNFM_P_SIZE; @@ -896,15 +922,13 @@ int comp_items(const struct item_head *stored_ih, const struct treepath *path) return memcmp(stored_ih, ih, IH_SIZE); } -/* unformatted nodes are not logged anymore, ever. This is safe -** now -*/ +/* unformatted nodes are not logged anymore, ever. This is safe now */ #define held_by_others(bh) (atomic_read(&(bh)->b_count) > 1) -// block can not be forgotten as it is in I/O or held by someone +/* block can not be forgotten as it is in I/O or held by someone */ #define block_in_use(bh) (buffer_locked(bh) || (held_by_others(bh))) -// prepare for delete or cut of direct item +/* prepare for delete or cut of direct item */ static inline int prepare_for_direct_item(struct treepath *path, struct item_head *le_ih, struct inode *inode, @@ -917,9 +941,8 @@ static inline int prepare_for_direct_item(struct treepath *path, *cut_size = -(IH_SIZE + ih_item_len(le_ih)); return M_DELETE; } - // new file gets truncated + /* new file gets truncated */ if (get_inode_item_key_version(inode) == KEY_FORMAT_3_6) { - // round_len = ROUND_UP(new_file_length); /* this was new_file_length < le_ih ... */ if (round_len < le_ih_k_offset(le_ih)) { @@ -933,12 +956,13 @@ static inline int prepare_for_direct_item(struct treepath *path, return M_CUT; /* Cut from this item. */ } - // old file: items may have any length + /* old file: items may have any length */ if (new_file_length < le_ih_k_offset(le_ih)) { *cut_size = -(IH_SIZE + ih_item_len(le_ih)); return M_DELETE; /* Delete this item. */ } + /* Calculate first position and size for cutting from item. */ *cut_size = -(ih_item_len(le_ih) - (pos_in_item(path) = @@ -957,12 +981,15 @@ static inline int prepare_for_direntry_item(struct treepath *path, RFALSE(ih_entry_count(le_ih) != 2, "PAP-5220: incorrect empty directory item (%h)", le_ih); *cut_size = -(IH_SIZE + ih_item_len(le_ih)); - return M_DELETE; /* Delete the directory item containing "." and ".." entry. */ + /* Delete the directory item containing "." and ".." entry. */ + return M_DELETE; } if (ih_entry_count(le_ih) == 1) { - /* Delete the directory item such as there is one record only - in this item */ + /* + * Delete the directory item such as there is one record only + * in this item + */ *cut_size = -(IH_SIZE + ih_item_len(le_ih)); return M_DELETE; } @@ -976,14 +1003,30 @@ static inline int prepare_for_direntry_item(struct treepath *path, #define JOURNAL_FOR_FREE_BLOCK_AND_UPDATE_SD (2 * JOURNAL_PER_BALANCE_CNT + 1) -/* If the path points to a directory or direct item, calculate mode and the size cut, for balance. - If the path points to an indirect item, remove some number of its unformatted nodes. - In case of file truncate calculate whether this item must be deleted/truncated or last - unformatted node of this item will be converted to a direct item. - This function returns a determination of what balance mode the calling function should employ. */ -static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th, struct inode *inode, struct treepath *path, const struct cpu_key *item_key, int *removed, /* Number of unformatted nodes which were removed - from end of the file. */ - int *cut_size, unsigned long long new_file_length /* MAX_KEY_OFFSET in case of delete. */ +/* + * If the path points to a directory or direct item, calculate mode + * and the size cut, for balance. + * If the path points to an indirect item, remove some number of its + * unformatted nodes. + * In case of file truncate calculate whether this item must be + * deleted/truncated or last unformatted node of this item will be + * converted to a direct item. + * This function returns a determination of what balance mode the + * calling function should employ. + */ +static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th, + struct inode *inode, + struct treepath *path, + const struct cpu_key *item_key, + /* + * Number of unformatted nodes + * which were removed from end + * of the file. + */ + int *removed, + int *cut_size, + /* MAX_KEY_OFFSET in case of delete. */ + unsigned long long new_file_length ) { struct super_block *sb = inode->i_sb; @@ -1023,8 +1066,10 @@ static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th, st int pos = 0; if ( new_file_length == max_reiserfs_offset (inode) ) { - /* prepare_for_delete_or_cut() is called by - * reiserfs_delete_item() */ + /* + * prepare_for_delete_or_cut() is called by + * reiserfs_delete_item() + */ new_file_length = 0; delete = 1; } @@ -1040,9 +1085,12 @@ static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th, st __le32 *unfm; __u32 block; - /* Each unformatted block deletion may involve one additional - * bitmap block into the transaction, thereby the initial - * journal space reservation might not be enough. */ + /* + * Each unformatted block deletion may involve + * one additional bitmap block into the transaction, + * thereby the initial journal space reservation + * might not be enough. + */ if (!delete && (*cut_size) != 0 && reiserfs_transaction_free_space(th) < JOURNAL_FOR_FREE_BLOCK_AND_UPDATE_SD) break; @@ -1074,17 +1122,21 @@ static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th, st break; } } - /* a trick. If the buffer has been logged, this will do nothing. If - ** we've broken the loop without logging it, it will restore the - ** buffer */ + /* + * a trick. If the buffer has been logged, this will + * do nothing. If we've broken the loop without logging + * it, it will restore the buffer + */ reiserfs_restore_prepared_buffer(sb, bh); } while (need_re_search && search_for_position_by_key(sb, item_key, path) == POSITION_FOUND); pos_in_item(path) = pos * UNFM_P_SIZE; if (*cut_size == 0) { - /* Nothing were cut. maybe convert last unformatted node to the - * direct item? */ + /* + * Nothing was cut. maybe convert last unformatted node to the + * direct item? + */ result = M_CONVERT; } return result; @@ -1104,9 +1156,11 @@ static int calc_deleted_bytes_number(struct tree_balance *tb, char mode) (mode == M_DELETE) ? ih_item_len(p_le_ih) : -tb->insert_size[0]; if (is_direntry_le_ih(p_le_ih)) { - /* return EMPTY_DIR_SIZE; We delete emty directoris only. - * we can't use EMPTY_DIR_SIZE, as old format dirs have a different - * empty size. ick. FIXME, is this right? */ + /* + * return EMPTY_DIR_SIZE; We delete emty directories only. + * we can't use EMPTY_DIR_SIZE, as old format dirs have a + * different empty size. ick. FIXME, is this right? + */ return del_size; } @@ -1169,7 +1223,8 @@ char head2type(struct item_head *ih) } #endif -/* Delete object item. +/* + * Delete object item. * th - active transaction handle * path - path to the deleted item * item_key - key to search for the deleted item @@ -1221,7 +1276,7 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th, PROC_INFO_INC(sb, delete_item_restarted); - // file system changed, repeat search + /* file system changed, repeat search */ ret_value = search_for_position_by_key(sb, item_key, path); if (ret_value == IO_ERROR) @@ -1238,16 +1293,18 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th, unfix_nodes(&s_del_balance); return 0; } - // reiserfs_delete_item returns item length when success + + /* reiserfs_delete_item returns item length when success */ ret_value = calc_deleted_bytes_number(&s_del_balance, M_DELETE); q_ih = tp_item_head(path); quota_cut_bytes = ih_item_len(q_ih); - /* hack so the quota code doesn't have to guess if the file - ** has a tail. On tail insert, we allocate quota for 1 unformatted node. - ** We test the offset because the tail might have been - ** split into multiple items, and we only want to decrement for - ** the unfm node once + /* + * hack so the quota code doesn't have to guess if the file has a + * tail. On tail insert, we allocate quota for 1 unformatted node. + * We test the offset because the tail might have been + * split into multiple items, and we only want to decrement for + * the unfm node once */ if (!S_ISLNK(inode->i_mode) && is_direct_le_ih(q_ih)) { if ((le_ih_k_offset(q_ih) & (sb->s_blocksize - 1)) == 1) { @@ -1261,24 +1318,28 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th, int off; char *data; - /* We are in direct2indirect conversion, so move tail contents - to the unformatted node */ - /* note, we do the copy before preparing the buffer because we - ** don't care about the contents of the unformatted node yet. - ** the only thing we really care about is the direct item's data - ** is in the unformatted node. - ** - ** Otherwise, we would have to call reiserfs_prepare_for_journal on - ** the unformatted node, which might schedule, meaning we'd have to - ** loop all the way back up to the start of the while loop. - ** - ** The unformatted node must be dirtied later on. We can't be - ** sure here if the entire tail has been deleted yet. - ** - ** un_bh is from the page cache (all unformatted nodes are - ** from the page cache) and might be a highmem page. So, we - ** can't use un_bh->b_data. - ** -clm + /* + * We are in direct2indirect conversion, so move tail contents + * to the unformatted node + */ + /* + * note, we do the copy before preparing the buffer because we + * don't care about the contents of the unformatted node yet. + * the only thing we really care about is the direct item's + * data is in the unformatted node. + * + * Otherwise, we would have to call + * reiserfs_prepare_for_journal on the unformatted node, + * which might schedule, meaning we'd have to loop all the + * way back up to the start of the while loop. + * + * The unformatted node must be dirtied later on. We can't be + * sure here if the entire tail has been deleted yet. + * + * un_bh is from the page cache (all unformatted nodes are + * from the page cache) and might be a highmem page. So, we + * can't use un_bh->b_data. + * -clm */ data = kmap_atomic(un_bh->b_page); @@ -1288,6 +1349,7 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th, ret_value); kunmap_atomic(data); } + /* Perform balancing after all resources have been collected at once. */ do_balance(&s_del_balance, NULL, NULL, M_DELETE); @@ -1304,20 +1366,21 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th, return ret_value; } -/* Summary Of Mechanisms For Handling Collisions Between Processes: - - deletion of the body of the object is performed by iput(), with the - result that if multiple processes are operating on a file, the - deletion of the body of the file is deferred until the last process - that has an open inode performs its iput(). - - writes and truncates are protected from collisions by use of - semaphores. - - creates, linking, and mknod are protected from collisions with other - processes by making the reiserfs_add_entry() the last step in the - creation, and then rolling back all changes if there was a collision. - - Hans +/* + * Summary Of Mechanisms For Handling Collisions Between Processes: + * + * deletion of the body of the object is performed by iput(), with the + * result that if multiple processes are operating on a file, the + * deletion of the body of the file is deferred until the last process + * that has an open inode performs its iput(). + * + * writes and truncates are protected from collisions by use of + * semaphores. + * + * creates, linking, and mknod are protected from collisions with other + * processes by making the reiserfs_add_entry() the last step in the + * creation, and then rolling back all changes if there was a collision. + * - Hans */ /* this deletes item which never gets split */ @@ -1347,7 +1410,11 @@ void reiserfs_delete_solid_item(struct reiserfs_transaction_handle *th, } if (retval != ITEM_FOUND) { pathrelse(&path); - // No need for a warning, if there is just no free space to insert '..' item into the newly-created subdir + /* + * No need for a warning, if there is just no free + * space to insert '..' item into the + * newly-created subdir + */ if (! ((unsigned long long) GET_HASH_VALUE(le_key_k_offset @@ -1376,7 +1443,11 @@ void reiserfs_delete_solid_item(struct reiserfs_transaction_handle *th, if (retval == CARRY_ON) { do_balance(&tb, NULL, NULL, M_DELETE); - if (inode) { /* Should we count quota for item? (we don't count quotas for save-links) */ + /* + * Should we count quota for item? (we don't + * count quotas for save-links) + */ + if (inode) { int depth; #ifdef REISERQUOTA_DEBUG reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE, @@ -1391,7 +1462,8 @@ void reiserfs_delete_solid_item(struct reiserfs_transaction_handle *th, } break; } - // IO_ERROR, NO_DISK_SPACE, etc + + /* IO_ERROR, NO_DISK_SPACE, etc */ reiserfs_warning(th->t_super, "vs-5360", "could not delete %K due to fix_nodes failure", &cpu_key); @@ -1447,11 +1519,13 @@ static void unmap_buffers(struct page *page, loff_t pos) do { next = bh->b_this_page; - /* we want to unmap the buffers that contain the tail, and - ** all the buffers after it (since the tail must be at the - ** end of the file). We don't want to unmap file data - ** before the tail, since it might be dirty and waiting to - ** reach disk + /* + * we want to unmap the buffers that contain + * the tail, and all the buffers after it + * (since the tail must be at the end of the + * file). We don't want to unmap file data + * before the tail, since it might be dirty + * and waiting to reach disk */ cur_index += bh->b_size; if (cur_index > tail_index) { @@ -1476,9 +1550,10 @@ static int maybe_indirect_to_direct(struct reiserfs_transaction_handle *th, BUG_ON(!th->t_trans_id); BUG_ON(new_file_size != inode->i_size); - /* the page being sent in could be NULL if there was an i/o error - ** reading in the last block. The user will hit problems trying to - ** read the file, but for now we just skip the indirect2direct + /* + * the page being sent in could be NULL if there was an i/o error + * reading in the last block. The user will hit problems trying to + * read the file, but for now we just skip the indirect2direct */ if (atomic_read(&inode->i_count) > 1 || !tail_has_to_be_packed(inode) || @@ -1490,17 +1565,18 @@ static int maybe_indirect_to_direct(struct reiserfs_transaction_handle *th, pathrelse(path); return cut_bytes; } + /* Perform the conversion to a direct_item. */ - /* return indirect_to_direct(inode, path, item_key, - new_file_size, mode); */ return indirect2direct(th, inode, page, path, item_key, new_file_size, mode); } -/* we did indirect_to_direct conversion. And we have inserted direct - item successesfully, but there were no disk space to cut unfm - pointer being converted. Therefore we have to delete inserted - direct item(s) */ +/* + * we did indirect_to_direct conversion. And we have inserted direct + * item successesfully, but there were no disk space to cut unfm + * pointer being converted. Therefore we have to delete inserted + * direct item(s) + */ static void indirect_to_direct_roll_back(struct reiserfs_transaction_handle *th, struct inode *inode, struct treepath *path) { @@ -1509,7 +1585,7 @@ static void indirect_to_direct_roll_back(struct reiserfs_transaction_handle *th, int removed; BUG_ON(!th->t_trans_id); - make_cpu_key(&tail_key, inode, inode->i_size + 1, TYPE_DIRECT, 4); // !!!! + make_cpu_key(&tail_key, inode, inode->i_size + 1, TYPE_DIRECT, 4); tail_key.key_length = 4; tail_len = @@ -1539,7 +1615,6 @@ static void indirect_to_direct_roll_back(struct reiserfs_transaction_handle *th, reiserfs_warning(inode->i_sb, "reiserfs-5091", "indirect_to_direct " "conversion has been rolled back due to " "lack of disk space"); - //mark_file_without_tail (inode); mark_inode_dirty(inode); } @@ -1551,15 +1626,18 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, struct page *page, loff_t new_file_size) { struct super_block *sb = inode->i_sb; - /* Every function which is going to call do_balance must first - create a tree_balance structure. Then it must fill up this - structure by using the init_tb_struct and fix_nodes functions. - After that we can make tree balancing. */ + /* + * Every function which is going to call do_balance must first + * create a tree_balance structure. Then it must fill up this + * structure by using the init_tb_struct and fix_nodes functions. + * After that we can make tree balancing. + */ struct tree_balance s_cut_balance; struct item_head *p_le_ih; - int cut_size = 0, /* Amount to be cut. */ - ret_value = CARRY_ON, removed = 0, /* Number of the removed unformatted nodes. */ - is_inode_locked = 0; + int cut_size = 0; /* Amount to be cut. */ + int ret_value = CARRY_ON; + int removed = 0; /* Number of the removed unformatted nodes. */ + int is_inode_locked = 0; char mode; /* Mode of the balance. */ int retval2 = -1; int quota_cut_bytes; @@ -1571,21 +1649,27 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, init_tb_struct(th, &s_cut_balance, inode->i_sb, path, cut_size); - /* Repeat this loop until we either cut the item without needing - to balance, or we fix_nodes without schedule occurring */ + /* + * Repeat this loop until we either cut the item without needing + * to balance, or we fix_nodes without schedule occurring + */ while (1) { - /* Determine the balance mode, position of the first byte to - be cut, and size to be cut. In case of the indirect item - free unformatted nodes which are pointed to by the cut - pointers. */ + /* + * Determine the balance mode, position of the first byte to + * be cut, and size to be cut. In case of the indirect item + * free unformatted nodes which are pointed to by the cut + * pointers. + */ mode = prepare_for_delete_or_cut(th, inode, path, item_key, &removed, &cut_size, new_file_size); if (mode == M_CONVERT) { - /* convert last unformatted node to direct item or leave - tail in the unformatted node */ + /* + * convert last unformatted node to direct item or + * leave tail in the unformatted node + */ RFALSE(ret_value != CARRY_ON, "PAP-5570: can not convert twice"); @@ -1599,15 +1683,20 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, is_inode_locked = 1; - /* removing of last unformatted node will change value we - have to return to truncate. Save it */ + /* + * removing of last unformatted node will + * change value we have to return to truncate. + * Save it + */ retval2 = ret_value; - /*retval2 = sb->s_blocksize - (new_file_size & (sb->s_blocksize - 1)); */ - /* So, we have performed the first part of the conversion: - inserting the new direct item. Now we are removing the - last unformatted node pointer. Set key to search for - it. */ + /* + * So, we have performed the first part of the + * conversion: + * inserting the new direct item. Now we are + * removing the last unformatted node pointer. + * Set key to search for it. + */ set_cpu_key_k_type(item_key, TYPE_INDIRECT); item_key->key_length = 4; new_file_size -= @@ -1650,11 +1739,13 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, return (ret_value == IO_ERROR) ? -EIO : -ENOENT; } /* while */ - // check fix_nodes results (IO_ERROR or NO_DISK_SPACE) + /* check fix_nodes results (IO_ERROR or NO_DISK_SPACE) */ if (ret_value != CARRY_ON) { if (is_inode_locked) { - // FIXME: this seems to be not needed: we are always able - // to cut item + /* + * FIXME: this seems to be not needed: we are always + * able to cut item + */ indirect_to_direct_roll_back(th, inode, path); } if (ret_value == NO_DISK_SPACE) @@ -1678,15 +1769,16 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, else ret_value = retval2; - /* For direct items, we only change the quota when deleting the last - ** item. + /* + * For direct items, we only change the quota when deleting the last + * item. */ p_le_ih = tp_item_head(s_cut_balance.tb_path); if (!S_ISLNK(inode->i_mode) && is_direct_le_ih(p_le_ih)) { if (mode == M_DELETE && (le_ih_k_offset(p_le_ih) & (sb->s_blocksize - 1)) == 1) { - // FIXME: this is to keep 3.5 happy + /* FIXME: this is to keep 3.5 happy */ REISERFS_I(inode)->i_first_direct_byte = U32_MAX; quota_cut_bytes = sb->s_blocksize + UNFM_P_SIZE; } else { @@ -1697,9 +1789,11 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, if (is_inode_locked) { struct item_head *le_ih = tp_item_head(s_cut_balance.tb_path); - /* we are going to complete indirect2direct conversion. Make - sure, that we exactly remove last unformatted node pointer - of the item */ + /* + * we are going to complete indirect2direct conversion. Make + * sure, that we exactly remove last unformatted node pointer + * of the item + */ if (!is_indirect_le_ih(le_ih)) reiserfs_panic(sb, "vs-5652", "item must be indirect %h", le_ih); @@ -1717,17 +1811,20 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th, "(CUT, insert_size==%d)", le_ih, s_cut_balance.insert_size[0]); } - /* it would be useful to make sure, that right neighboring - item is direct item of this file */ + /* + * it would be useful to make sure, that right neighboring + * item is direct item of this file + */ } #endif do_balance(&s_cut_balance, NULL, NULL, mode); if (is_inode_locked) { - /* we've done an indirect->direct conversion. when the data block - ** was freed, it was removed from the list of blocks that must - ** be flushed before the transaction commits, make sure to - ** unmap and invalidate it + /* + * we've done an indirect->direct conversion. when the + * data block was freed, it was removed from the list of + * blocks that must be flushed before the transaction + * commits, make sure to unmap and invalidate it */ unmap_buffers(page, tail_pos); REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask; @@ -1758,20 +1855,25 @@ static void truncate_directory(struct reiserfs_transaction_handle *th, set_le_key_k_type(KEY_FORMAT_3_5, INODE_PKEY(inode), TYPE_STAT_DATA); } -/* Truncate file to the new size. Note, this must be called with a transaction - already started */ +/* + * Truncate file to the new size. Note, this must be called with a + * transaction already started + */ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, - struct inode *inode, /* ->i_size contains new size */ + struct inode *inode, /* ->i_size contains new size */ struct page *page, /* up to date for last block */ - int update_timestamps /* when it is called by - file_release to convert - the tail - no timestamps - should be updated */ + /* + * when it is called by file_release to convert + * the tail - no timestamps should be updated + */ + int update_timestamps ) { INITIALIZE_PATH(s_search_path); /* Path to the current object item. */ struct item_head *p_le_ih; /* Pointer to an item header. */ - struct cpu_key s_item_key; /* Key to search for a previous file item. */ + + /* Key to search for a previous file item. */ + struct cpu_key s_item_key; loff_t file_size, /* Old file size. */ new_file_size; /* New file size. */ int deleted; /* Number of deleted or truncated bytes. */ @@ -1784,8 +1886,8 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, || S_ISLNK(inode->i_mode))) return 0; + /* deletion of directory - no need to update timestamps */ if (S_ISDIR(inode->i_mode)) { - // deletion of directory - no need to update timestamps truncate_directory(th, inode); return 0; } @@ -1793,7 +1895,7 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, /* Get new file size. */ new_file_size = inode->i_size; - // FIXME: note, that key type is unimportant here + /* FIXME: note, that key type is unimportant here */ make_cpu_key(&s_item_key, inode, max_reiserfs_offset(inode), TYPE_DIRECT, 3); @@ -1827,9 +1929,11 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, int bytes = op_bytes_number(p_le_ih, inode->i_sb->s_blocksize); - /* this may mismatch with real file size: if last direct item - had no padding zeros and last unformatted node had no free - space, this file would have this file size */ + /* + * this may mismatch with real file size: if last direct item + * had no padding zeros and last unformatted node had no free + * space, this file would have this file size + */ file_size = offset + bytes - 1; } /* @@ -1867,14 +1971,17 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, set_cpu_key_k_offset(&s_item_key, file_size); - /* While there are bytes to truncate and previous file item is presented in the tree. */ + /* + * While there are bytes to truncate and previous + * file item is presented in the tree. + */ /* - ** This loop could take a really long time, and could log - ** many more blocks than a transaction can hold. So, we do a polite - ** journal end here, and if the transaction needs ending, we make - ** sure the file is consistent before ending the current trans - ** and starting a new one + * This loop could take a really long time, and could log + * many more blocks than a transaction can hold. So, we do + * a polite journal end here, and if the transaction needs + * ending, we make sure the file is consistent before ending + * the current trans and starting a new one */ if (journal_transaction_should_end(th, 0) || reiserfs_transaction_free_space(th) <= JOURNAL_FOR_FREE_BLOCK_AND_UPDATE_SD) { @@ -1906,7 +2013,7 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, update_and_out: if (update_timestamps) { - // this is truncate, not file closing + /* this is truncate, not file closing */ inode->i_mtime = CURRENT_TIME_SEC; inode->i_ctime = CURRENT_TIME_SEC; } @@ -1918,7 +2025,7 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, } #ifdef CONFIG_REISERFS_CHECK -// this makes sure, that we __append__, not overwrite or add holes +/* this makes sure, that we __append__, not overwrite or add holes */ static void check_research_for_paste(struct treepath *path, const struct cpu_key *key) { @@ -1952,13 +2059,22 @@ static void check_research_for_paste(struct treepath *path, } #endif /* config reiserfs check */ -/* Paste bytes to the existing item. Returns bytes number pasted into the item. */ -int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th, struct treepath *search_path, /* Path to the pasted item. */ - const struct cpu_key *key, /* Key to search for the needed item. */ - struct inode *inode, /* Inode item belongs to */ - const char *body, /* Pointer to the bytes to paste. */ +/* + * Paste bytes to the existing item. + * Returns bytes number pasted into the item. + */ +int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th, + /* Path to the pasted item. */ + struct treepath *search_path, + /* Key to search for the needed item. */ + const struct cpu_key *key, + /* Inode item belongs to */ + struct inode *inode, + /* Pointer to the bytes to paste. */ + const char *body, + /* Size of pasted bytes. */ int pasted_size) -{ /* Size of pasted bytes. */ +{ struct super_block *sb = inode->i_sb; struct tree_balance s_paste_balance; int retval; @@ -2019,8 +2135,10 @@ int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th, struct tree #endif } - /* Perform balancing after all resources are collected by fix_nodes, and - accessing them will not risk triggering schedule. */ + /* + * Perform balancing after all resources are collected by fix_nodes, + * and accessing them will not risk triggering schedule. + */ if (retval == CARRY_ON) { do_balance(&s_paste_balance, NULL /*ih */ , body, M_PASTE); return 0; @@ -2041,7 +2159,8 @@ int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th, struct tree return retval; } -/* Insert new item into the buffer at the path. +/* + * Insert new item into the buffer at the path. * th - active transaction handle * path - path to the inserted item * ih - pointer to the item header to insert @@ -2064,8 +2183,10 @@ int reiserfs_insert_item(struct reiserfs_transaction_handle *th, fs_gen = get_generation(inode->i_sb); quota_bytes = ih_item_len(ih); - /* hack so the quota code doesn't have to guess if the file has - ** a tail, links are always tails, so there's no guessing needed + /* + * hack so the quota code doesn't have to guess + * if the file has a tail, links are always tails, + * so there's no guessing needed */ if (!S_ISLNK(inode->i_mode) && is_direct_le_ih(ih)) quota_bytes = inode->i_sb->s_blocksize + UNFM_P_SIZE; @@ -2074,8 +2195,10 @@ int reiserfs_insert_item(struct reiserfs_transaction_handle *th, "reiserquota insert_item(): allocating %u id=%u type=%c", quota_bytes, inode->i_uid, head2type(ih)); #endif - /* We can't dirty inode here. It would be immediately written but - * appropriate stat item isn't inserted yet... */ + /* + * We can't dirty inode here. It would be immediately + * written but appropriate stat item isn't inserted yet... + */ depth = reiserfs_write_unlock_nested(inode->i_sb); retval = dquot_alloc_space_nodirty(inode, quota_bytes); reiserfs_write_lock_nested(inode->i_sb, depth); @@ -2089,7 +2212,10 @@ int reiserfs_insert_item(struct reiserfs_transaction_handle *th, #ifdef DISPLACE_NEW_PACKING_LOCALITIES s_ins_balance.key = key->on_disk_key; #endif - /* DQUOT_* can schedule, must check to be sure calling fix_nodes is safe */ + /* + * DQUOT_* can schedule, must check to be sure calling + * fix_nodes is safe + */ if (inode && fs_changed(fs_gen, inode->i_sb)) { goto search_again; } |